WO2013056444A1

WO2013056444A1 - Method for monitoring drill rod of mechanical lock drilling rig and controller, monitoring system and drilling rig

Info

Publication number: WO2013056444A1
Application number: PCT/CN2011/081017
Authority: WO
Inventors: 李志杰; 罗建利; 孙涛; 李昱
Original assignee: 中联重科股份有限公司; 湖南中联重科专用车有限责任公司
Priority date: 2011-10-20
Filing date: 2011-10-20
Publication date: 2013-04-25

Abstract

Disclosed is a method for monitoring the drilling rod of a mechanical lock drilling rig. The drilling rig comprises a multiple-segment drilling rod, wherein the segments on the drilling rod are respectively the 1^st drilling rod segment to the Nth drilling rod segment from the outside to the inside. M locking points are provided on each drilling rod segment, and with the 1^st drilling rod segment as the reference rod, the maximum extension length of the ith drilling rod segment is L_i, wherein i=2, 3,..., N; the distance of the jth locking point from the top of the drilling rod segment is J_j, wherein j=1,..., M; the drilling rod segment being operated and measured is the ith segment; measuring the actual extension length of the ith drilling rod as l_i, based on l_i=L_i-J_j, and determining that the ith drilling rod segment has been moved to the jth locking point. Further disclosed is a controller and apparatus for monitoring the drilling rod of a mechanical lock drilling rig, and a drilling rig comprising the apparatus. By monitoring the locking point to which the drilling rod has been currently moved, the method prompts the operator to perform locking or unlocking actions in a timely manner based on requirements, thus improving operational efficiency and aiding in eliminating the problem of rods not being unlocked.

Description

Drill pipe monitoring method and controller, monitoring system and drilling machine for machine lock drilling rig

The invention relates to a rotary drilling rig, and in particular to a monitoring method, a controller, a monitoring system and a drilling machine for a drill pipe locking point of a real-time monitoring type rotary drilling rig. Background technique

At present, the application of rotary drilling rigs is increasingly widespread. Rotary drilling rigs usually use telescopic drill pipes. In the lifting operation of the telescopic drill pipes, the telescopic drill pipes will be lifted in sections from the inside to the outside. Telescopic drill pipes are usually divided into friction drill pipes, machine lock drill pipes and combined drill pipes.

The machine lock drill pipe is a commonly used telescopic drill pipe. When the rotary drilling rig is constructed with a machine-locked drill pipe, the machine-locking drill bit is lowered in a step-by-section manner from the outside to the inside, and the drilling is performed in the reverse order, that is, from the inside to the outside. Retracted. The outer key of the outer surface of all the drill rods of the machine-locked drill pipe is formed with a plurality of locking points, and the outermost drill pipe is locked by the inner key of the power head and the outer key of the outermost drill pipe. Point matching, all the drill pipes except the outermost drill pipe are matched with the locking points of the outer keys of the inner section drill pipe by the inner key of the outer section drill pipe, and the two drill pipes can be mechanically connected The way of locking each other, so the force transmitted between the drill rods is relatively large, so the machine-locked drill pipe can be applied to the case where the soil layer is hard.

However, for the machine-locked drill pipe, the operator cannot see the lock between the drill pipes. The locking and unlocking of the machine-locked drill pipe can only rely on experience, sometimes it is necessary to try repeatedly to succeed. It reduces the efficiency of the work; when the unlocking is unsuccessful, it will cause the phenomenon of "with the pole". If it cannot be discovered and processed in time, it will cause great security risks. Summary of the invention

The object of the present invention is to provide a drill pipe monitoring method for a machine-locking drill, which can The locking and unlocking of the drill pipe of the machine lock rig is monitored.

In order to achieve the above object, the present invention provides a drill pipe monitoring method for a machine-locking drill, the drill includes a multi-section drill pipe, and the drill pipe is respectively from the outside to the inside, and each of the drill pipes has a section 1 to an N-section. M locking points, with the first section of the drill pipe as the reference rod, the maximum elongation of the i-th drill pipe is where ί=2,3 ·· , Ν, the jth locking point is away from the drill pipe The distance of the top end is where j=l, ,M, which is characterized in that it is determined that the measured operated drill pipe is the i-th segment, and the actual elongation of the i-th drill pipe received by the measurement is 1, according to ^ Lr Jj , to determine the movement of the i-th drill pipe to the j-th locking point.

Further, it is another object of the present invention to provide a drill pipe monitoring controller for a machine lock drill which is capable of implementing the above drill pipe monitoring method.

In order to achieve the above object, the present invention provides a drill pipe monitoring controller for a machine-locked drill, the drill includes a multi-section drill pipe, and the drill pipe is from the outside to the inside, respectively, from the first section to the Nth section. There are M locking points on the rod, and the first section of the drill rod is used as the reference rod. The maximum elongation of the i-th drill rod is ί=2,3,···,Ν, the jth locking point distance The distance of the top end of the drill pipe is Jj, where j=l, ,M, the controller includes an input device, a processing device and an output device which are sequentially connected, and is characterized in that:

The input device is configured to acquire a signal of a position of the drill pipe and an actual elongation of the drill pipe to be operated;

The processing device is configured to determine, according to the received position signal of the drill pipe, that the operated drill pipe is the i-th segment, and determine the maximum elongation of the i-th drill pipe by the operated drill pipe for the i-th segment, The actual elongation of the i-th drill pipe 1, = - Jj determines the value of j, and transmits the value of j to the output device;

The output device is operative to output a signal of the value of j.

In addition, another object of the present invention is to provide a drill pipe monitoring system for a machine-lock drill, which includes the above-described drill pipe monitoring controller of the present invention, and can realize the monitoring of the drill pipe provided by the present invention. method. In order to achieve the above object, the present invention provides a drill pipe monitoring system for a machine lock drill, the drill includes a multi-section drill pipe, and the drill pipe is respectively from the outer to the inner, respectively, from the first section to the Nth section, and each of the drill pipes has M locking points, with the first section of the drill pipe as the reference rod, the maximum elongation of the i-th drill pipe is ί=2,3,···,Ν, where =0, the jth locking point The distance from the top end of the drill pipe is where j=l, ,M, wherein the monitoring system includes a detecting device, a controller for outputting a signal indicating a locked locking point, and a controller according to the controller A display device that outputs a signal for display, the controller being a drill pipe monitoring controller in accordance with the present invention.

Additionally, it is another object of the present invention to provide a machine lock drill that includes the drill pipe monitoring system provided by the present invention.

According to the above technical solution, the present invention measures the position and the actual elongation of the drill pipe, and by detecting the drill pipe being operated as the i-th section, it is judged whether the i-th drill pipe is moved to the lock point. The above technical solution can monitor the moving point of the currently operated drill pipe to a locking point by a simple method, thereby prompting the operator to lock or unlock the operation as needed, thereby improving the operation efficiency and helping to release the belt. The problem with the pole.

Other features and advantages of the invention will be described in detail in the detailed description which follows. DRAWINGS

The drawings are intended to provide a further understanding of the invention, and are in the In the drawing:

Figure 1 is a schematic view of a preferred embodiment of a rotary drilling rig according to the present invention;

Figure 2 is a schematic view of the end of a drill pipe according to the present invention;

Figure 3 is a schematic view of the locking point of the drill pipe according to the present invention;

4 is a schematic view showing the connection of an inner section drill pipe and an outer section drill pipe according to the present invention. Description of the reference numerals

1 foreign key 2 inner key

31, 32, 33, 34 lock points

12 power head

14 main winch 15 guide ring

17 rope puller 18 tray

19 drill bucket

D The depth of the bottom of the drill pipe

H power head height from the ground

T section 1 length of the drill pipe

E-drilling end of the end of the drill pipe

The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It is to be understood that the specific embodiments described herein are intended to be illustrative and not restrictive.

In order to facilitate understanding of the technical solution of the present invention, the operation of each part of the machine lock drill pipe will first be described. As shown in Figure 1 to Figure 3, in addition to the outermost drill pipe, the machine-locked drill pipe has a guide ring 15 at the top of each drill pipe; in addition to the innermost drill pipe, the inner surface of each drill pipe bottom has an inner surface. Key 2; The top of the innermost drill pipe has a rope pulling device 17, which is connected with the wire rope of the main hoisting 14, the bottom of the innermost drill pipe has a tray 18, and the bottom end of the innermost drill pipe is connected with a drill. Bucket 19. When the drill pipe is extended, the outermost drill pipe falls on the power head 12 through the follower frame. When the i-th drill pipe is not fully extended from the i-1th drill pipe, the bottom end of the i-th drill pipe must fall on the tray 18; when the i-th drill pipe is fully extended, the The bottom end of the i-th drill pipe has been detached from the tray 18, so that the guide ring 15 at its top end necessarily falls on the inner key 2 of the upper drill pipe.

Generally, three inner keys 2 are evenly distributed in the circumferential direction of the drill pipe, and the number of the inner key 2 and the outer key 1 is Correspondence. A plurality of locking points are distributed at a certain interval in the axial direction of the outer surface of the drill pipe, and the locking point is a step in the longitudinal direction formed by the outer key being inwardly recessed, and four diagrams are schematically illustrated in FIG. Lock points 31, 32, 33 and 34 are illustrated. The general machine-locked drill pipe is composed of a plurality of such drill pipes from the outside to the inside, and the inner-section drill pipe among any two adjacent drill pipes can be expanded and contracted in the outer joint drill pipe. During the drilling operation, the inner section drill rod protrudes from the outer section drill rod, and the inner key of the outer section drill rod drives the outer key of the inner section drill rod, so that the inner section drill rod rotates by the outer section drill rod. When the inner drill pipe is extended, the machine-locked drill pipe needs to be locked, that is, the inner key of the outer drill pipe reaches the locking point of the outer key of the inner drill pipe and is attached to the concave portion of the outer key. At this time, the pressure exerted downward by the outer section drill pipe can be transmitted to the inner section drill pipe through the locking point step of the inner key and the outer key, thereby realizing the pressurization of the drill pipe.

When the rotary drilling rig is constructed with a machine-locked drill pipe, the machine-locking drill bit is lowered in the borehole according to the drill pipe from the outside to the inside, until the drill bit touches the bottom of the drill hole, and then the power is operated. The head rotates in the forward direction, and the friction between the bottom of the drilled hole and the drill bit causes a relative rotation between the drill pipes in the positive direction, and the inner key of the outer drill pipe and the outer key of the inner drill pipe cooperate with each other to complete the addition. lock. When the drill pipe is in operation, the pressurizing device 11 of the drill is used to provide downward pressure to the drill pipe. When lifting the drill, in the reverse order, firstly, the power head is reversely rotated, and the friction between the bottom of the drilled hole and the drill bit causes the opposite rotation between the drill pipes in the opposite direction, and the inner key and the inner drill pipe. The outer keys of the drill pipe are separated from each other to complete the unlocking, and then the drill pipe is retracted step by step from the inside to the outside.

The invention provides a drill pipe monitoring method for a machine-locking drill, the drill comprises a multi-section drill pipe, and the drill pipe is respectively from the outer to the inner, the first section to the Nth section, and each of the drill pipes has M locking points. With the first section of the drill pipe as the reference rod, the maximum elongation of the i-th drill pipe is where ί=2,3 ··,Ν, the distance from the j-th locking point to the top end of the drill pipe is j=l, ,M, characterized in that it is determined that the measured operated drill pipe is the i-th segment, and the measured actual elongation of the i-th drill pipe is measured according to l^Lr Jj, determining the i-th segment The drill pipe moves to the jth lock point.

Since the locking between the drill pipe of the machine-locking rig is difficult to observe during the working process and has an important influence on the safety of the drill pipe, the state needs to be monitored.

The invention provides a method for monitoring the locking and unlocking condition of a drill pipe, the method can Monitor the locked lock of the drill pipe at the locking point. First of all, to determine which drill pipe is currently operated, because the maximum elongation of each drill pipe is pre-measured, so you need to know which drill pipe is currently operating, in order to know the corresponding The maximum elongation of the drill pipe, according to the elongation of the drill pipe and the distance of the locking point from the top end of the drill pipe, to determine which of the plurality of locking points the drill pipe is currently moving to. To remind the operator to lock or unlock the operation as needed.

The outer surface of the drill pipe is distributed with a plurality of locking points at a certain interval in the axial direction. The distance between each locking point and the top end of the drill pipe is known, and the actual elongation of the drill pipe should be equal to the maximum elongation of the drill pipe. The distance from the locking point to the tip of the drill pipe.

The measurement of the maximum elongation and the actual elongation of the drill pipe described above is simple and easy, so that the above monitoring method of the present invention can be easily realized, and the accuracy and reliability of the monitoring can be improved by merely improving the measurement accuracy.

According to the above technical solution, the present invention measures the position and the actual elongation of the drill pipe, and by detecting the drill pipe being operated as the i-th section, it is judged whether the i-th drill pipe is moved to the lock point. The above technical solution can monitor the moving point of the currently operated drill pipe to a locking point by a simple method, thereby prompting the operator to lock or unlock the operation as needed, thereby improving the operation efficiency and reducing the occurrence of the rod. The risk of failure.

Preferably, the determined measured drill pipe is the i-th section, specifically: the drill comprises a wire rope of the main hoist 14, receiving the detected contraction length S of the current main hoist 14 of the wire, if 1^+ ···+!^ ₁ <S<L ₁ + +L ₁ , where =0, then it is determined that the drill pipe being operated is the i-th drill pipe.

In the present invention, it is first determined which section of the drill pipe to be operated, and therefore, a preferred embodiment for determining the operated drill pipe as the ith section is preferably provided, since the innermost drill pipe passes the main hoisting The wire rope of ₁₄ is pulled upwards, so the length of the wire rope contraction of the main hoisting 14 is the height of the drill pipe movement.

Since the maximum elongation of the i-th drill pipe is the outermost section, the first section of the drill pipe cannot be stretched, so LfO, so that the maximum expansion range of the i-th drill pipe is the current i-th segment drill. When the rod is stretched, the length of the entire drill rod should be between! ^+...+! ^And! ^+...+! Between, therefore, when the detected contraction length S of the main hoisting wire rope is within this range, the operated drill pipe is the i-th section.

Preferably, the determining the measured operated drill pipe is the ith section, specifically: the drilling machine further comprises a power head 12, receiving the depth D of the underground of the detected drill pipe end, the power head 12 is from the ground. Height H, the length T of the first section of the drill pipe, the extension length of the end of the drill pipe is E=D+HT, if

Then determine that the drill pipe being operated is the i-th drill pipe.

The method in the foregoing preferred embodiment is to judge the operated drill pipe as the i-th section by the movement of the main hoisting wire rope, but since the power head also moves up and down, another preferred embodiment of the present invention provides A judgment method that takes the position of the power head 2 into consideration and makes the judgment result more accurate.

The above calculation method is to measure the distance between the end of the drill pipe and the power head, and then remove the length of the first drill pipe, that is, the length of the outermost drill pipe, and the drill pipe can be obtained from the first drill pipe. length. When the current i-th drill pipe is stretched, the length of the entire drill pipe should be between 1^+···+!^! ^+...+! Between ^, when it is judged that L ₁ + + L ₁ _ ₁ < E < L ₁ + + L ₁ , the drill pipe to be operated is the drill pipe described in the ith section.

The manner in which the drill stems that are operated by the present invention are judged to be the i-th section are described above. Among them, the first method of directly judging according to the contraction length of the main hoisting wire rope is relatively simple, but since the power head 12 can also move up and down, there is an error, and the accuracy is low, but only the contraction length of the main hoisting wire rope needs to be measured. A physical quantity; the second method takes into account the position of the power head 12, but at least the height of the power head 12 from the ground and the depth of the end of the drill pipe need to be measured, and the measurement method is complicated, but the accuracy is improved.

More preferably, the actual elongation of the i-th drill pipe is

Through the above description of the calculation method of the extension length E of the end of the drill pipe, the calculation of the value of E avoids the error introduced by the position of the power head 12 and embodies the actual length of the actual drill pipe, and subtracts from the value. The total length of the fully extended drill pipe beyond the i-th drill pipe is the i-th drill pipe The actual amount of elongation. Of course, in addition to this, the actual elongation of the i-th drill pipe can also be obtained by other means, such as direct measurement.

Preferably, the monitoring method further comprises monitoring whether the drill rod has a rod, and outputting the value of the j while the rod is generated.

In the above preferred embodiment, the drill pipe monitoring method of the present invention also monitors the phenomenon of the rod at the same time. When the phenomenon of the rod is detected, the monitoring method of the present invention timely feeds back the current locking point to the operator. The operator can use this as a reference to perform a targeted unlocking operation, thereby facilitating the release of the rod phenomenon.

In addition, the present invention provides a drill pipe monitoring controller for a machine lock drill, the drill includes a plurality of drill pipes, and the drill pipe is from the outside to the inside, respectively, from the first section to the Nth section, each of the drill pipes With M locking points, with the first section of the drill pipe as the reference rod, the maximum elongation of the i-th drill pipe is where ί=2,3,···,Ν, the jth locking point is away from the section The distance of the top end of the drill pipe is ^, where j=l, ,M, the controller includes an input device, a processing device, and an output device connected in sequence, wherein: the input device is used to collect the drill pipe a signal of the position and the actual amount of elongation of the drill pipe being operated;

The output device is operative to output a signal of the value of j.

The invention provides a controller for monitoring the locking and unlocking condition of the drill pipe, and the controller can monitor the locking condition of the machine lock drill pipe at the locking point. First, the input device of the controller is capable of acquiring the position signal of the drill pipe and transmitting the signal to the processing device to determine which drill pipe is currently being operated, because the maximum elongation of each drill pipe The quantities are measured in advance, Therefore, it is necessary to know which drill pipe is currently operated, and the processing device can correspondingly obtain the maximum elongation of the drill pipe, and then according to the actual elongation signal of the drill pipe input by the input device and pre-stored in the processing. The distance between each locking point in the device from the top end of the drill pipe to determine which of the plurality of locking points the movement of the drill pipe moves to, thereby alerting the operator to lock or unlock the operation as needed. The outer surface of the drill pipe is distributed with a plurality of locking points at a certain interval in the axial direction. The distance between each locking point and the top end of the drill pipe is known, and the actual elongation of the drill pipe should be equal to the maximum elongation of the drill pipe. The distance from the locking point to the tip of the drill pipe.

The measurement of the maximum elongation and the actual elongation of the drill pipe described above is simple and easy, and therefore the controller of the present invention is easy to implement the above monitoring method, and the accuracy and reliability of the monitoring can be improved by merely increasing the accuracy of the measurement.

Preferably, the drilling machine comprises a wire rope of a main hoisting 14, the input device receiving a signal of a contraction length S of the wire rope of the main hoisting 14, the processing device judging when! ^+... + i<S< +-+ where =0, the drill pipe being operated at this time is the i-th drill pipe.

In the present invention, in order to determine the rated tension of the pressurizing device 11, the processing device first determines which section of the drill pipe to be operated, and therefore requires a signal regarding the position of the drill pipe being operated. Since the innermost drill pipe is pulled upward through the wire rope of the main hoist 14, the length of the wire rope of the main hoisting 14 is the height of the drill pipe movement, and the input device receives the signal for processing equipment to judge.

Since the maximum elongation of the i-th drill pipe is the outermost section, the first section of the drill pipe cannot be telescoped, so = 0, so that the maximum expansion range of the i-th drill pipe is! ^, and when the current i-th drill pipe is stretched, the length of the entire drill pipe should be between! ^+...+! ^ and +···+ Therefore, when the processing device judges that the contraction length S of the wire rope of the main hoisting 4 detected by the input device is within this range, the operated drill pipe is the i-th segment.

Preferably, the drilling machine further comprises a power head 12, the input device receiving a signal of a depth D in the ground at the end of the drill pipe, a signal of the height H of the power head 12 from the ground, and a length T of the first drill pipe Signal, the processing device calculates the extension length of the end of the drill rod as E=D+HT, and judges that it is operated when 1^+···+!^ ₁ <E<L ₁ +~+L ₁ The drill pipe is the i-th drill pipe.

In the foregoing preferred embodiment, the input device of the controller receives the contraction length signal of the wire rope of the main hoist 14, but since the power head 12 also moves up and down, the processing device only depends on the contraction length of the wire rope of the main hoisting 14 Judging is easy to produce errors. In another preferred embodiment of the controller of the present invention, the input device receives the signal of the height of the power head 12 from the ground and the depth of the underground end of the drill pipe, and then removes the length of the first section of the drill pipe, that is, the outermost layer. The length of the drill pipe allows the length of the drill pipe to extend from the first drill pipe. When the current i-th drill pipe is stretched, the length of the entire drill pipe should be between Lf+Lw and! ^+...+! Between ^, when _{_{_{_{L 1+ ~ + L 1 _ 1}}}} <E <L 1+ - + L f of the drill pipe handling device is operated as a determination section of drill pipe i.

The above describes two ways in which the processing device of the present invention determines that the drill pipe being operated is the i-th section. Among them, the first method of directly judging according to the contraction length of the main hoisting wire rope is relatively simple, but since the power head 12 can also move up and down, there is an error, and the accuracy is low, but only the contraction length of the main hoisting wire rope needs to be measured. A physical quantity; the second method takes into account the position of the power head 12, but at least the height of the power head 2 from the ground and the depth of the end of the drill pipe need to be measured, and the measurement method is complicated, but the accuracy is improved.

More preferably, the actual elongation of the i-th drill pipe is lfE^Lf+ o. By the above description of the calculation method of the extension length E of the drill pipe end, the calculation of the value of E avoids the power head 12 The error introduced by the position embodies the actual length of the actual drill pipe. The total length of the fully extended drill pipe other than the i-th drill pipe is subtracted from the value, which is the actual extension of the i-th drill pipe. Long amount. Thus, the actual elongation of the i-th drill pipe can be measured by measuring the height of the power head 12, drilling The depth of the rod end and the length of the first section of the drill pipe are calculated, and the calculated value is relatively accurate. Of course, the actual elongation of the i-th drill pipe can also be measured or calculated by other methods, such as direct measurement.

Preferably, the input device is further configured to receive a signal indicating whether the drill rod has a rod. In the above preferred embodiment, the drill pipe monitoring method of the present invention also monitors the phenomenon of the rod at the same time. When the phenomenon of the rod is detected, the monitoring method of the present invention timely feeds back the current locking point to the operator. The operator can use this as a reference to perform a targeted unlocking operation, thereby facilitating the release of the rod phenomenon.

In addition, the present invention also provides a drill pipe monitoring system for a machine-locking drill, the drill includes a multi-section drill pipe, and the drill pipe is from the outside to the inside, respectively, from the first section to the N-th section, and each of the drill-rods has M Lock the point, with the first section of the drill pipe as the reference rod, the maximum elongation of the i-th drill pipe is where ί=2,3 ··,Ν, where=0, the jth lock point is the distance from the drill The distance of the top end of the rod is where j=l, ,M, wherein the monitoring system includes a detecting device, a controller for outputting a signal indicating a locked locking point, and displaying according to the controller output signal Display device, the controller is a drill pipe monitoring controller according to the above claims 6-10.

The invention provides a monitoring system for monitoring the locking and unlocking condition of a drill pipe, and the monitoring system can monitor the locking state of the machine lock drill pipe at the locking point. First, the detecting device detects the position of the drill pipe and transmits the signal to the processing device through the input device of the controller to determine which drill pipe the currently operated drill pipe is, because the maximum elongation of each drill pipe The quantity is pre-measured, so it is necessary to know which section of the drill pipe is currently being operated, and the processing equipment can correspondingly obtain the maximum elongation of the drill pipe, and then according to the actual measurement of the drill pipe measured by the detecting device. The amount of elongation and the distance from the top of the drill pipe to the point of the drill pipe to determine which of the plurality of lock points is locked, and the monitoring result of the lock point is transmitted through the output device of the controller Go to the display device to prompt the operator to perform a lock or unlock operation as needed. The outer surface of the drill pipe is axial A plurality of locking points are distributed in a certain interval in the direction, and the distance between each locking point and the top end of the drill pipe is known, and the actual elongation of the drill pipe should be equal to the maximum elongation of the drill pipe and the distance from the locking point to the top of the drill pipe. The measurement of the maximum elongation and the actual elongation of the above drill pipe is simple and easy, so the above monitoring method of the present invention is easy to implement, and the accuracy and reliability of the monitoring can be improved by merely improving the measurement accuracy. .

Moreover, the outer surface of the drill pipe is distributed with a plurality of locking points at a certain interval in the axial direction, and the distance between each locking point and the top end of the drill pipe is known, and the actual elongation of the drill pipe should be equal to the maximum extension of the drill pipe. The distance from the top of the drill pipe to the length of the lock point.

According to a preferred embodiment of the drill pipe monitoring controller, the drill comprises a wire rope of a main hoisting 14, the detecting device comprising a depth sensor, the depth sensor measuring a contraction length S of the wire rope of the main hoist 14, if L ₁ + +L ₁ _ ₁ <S<L ₁ + +L ₁ , where =0, then the drill pipe being operated is the i-th drill pipe.

In the monitoring system of the present invention, in order to determine the rated tension of the pressurizing device 11, the processing device of the controller first determines which section of the drill pipe is being operated, and therefore requires a signal of the position of the drill pipe being operated. Since the innermost drill pipe is pulled upward through the wire rope of the main hoist 14, the length of the wire rope contraction of the main hoisting 14 is the height of the drill pipe movement, and the detecting device can detect the contraction length of the wire rope of the main hoisting 14, It is thus transferred to the processing device of the controller for calculation and processing.

Generally, in the preferred embodiment, the detection device can include a depth sensor that is typically mounted on the main hoisting shaft. However, the installation position of the above depth sensor is not limited. In the preferred case of this embodiment, the depth sensor can be mounted at any suitable location. Because the maximum elongation of the i-th drill pipe is! ^, the eleventh section of the outermost section is not able to expand and contract, so _Ll =0, so that the maximum expansion range of the i-th drill pipe is the length range of the entire drill pipe when the current i-th drill pipe is stretched. It should be between! ^+...+! Between ^ and 1^+···+!^, when the processing device judges that the contraction length S of the wire rope of the main hoisting 14 detected by the input device is within this range, the operated drill pipe is the i-th segment.

According to a preferred embodiment of the drill pipe monitoring controller, the detecting device comprises a depth sensor and a distance sensor, the depth sensor measuring a depth value D of a ground in which the end of the drill pipe is located, the distance sensor measuring the power head 12 from the ground Height H, known or manual measurement of the length T of the first section of the drill pipe, then the extension of the end of the drill pipe is E = D + HT, if L _{1 +} ~

The drill pipe being operated is the i-th drill pipe.

In a preferred embodiment of the foregoing monitoring system, a scheme for detecting the contraction length signal of the wire rope of the main hoisting 14 is employed, but since the power head 12 also moves up and down, the controller processing apparatus is only based on the wire rope of the main hoisting 14 It is easy to produce an error by shrinking the length for judgment. A monitoring system according to another preferred embodiment of the present invention, wherein the detecting device includes a depth sensor and a distance sensor, respectively, using the distance sensor and the depth sensor to respectively determine the height of the power head 12 from the ground and the depth of the underground end of the drill pipe end The signal is detected, and after the above-mentioned detected values are summed, the length of the first section of the drill pipe (ie, the length of the outermost drill pipe) is subtracted, and the drill pipe is extended from the first section of the drill pipe. length. When the current i-th drill pipe is stretched, the length of the entire drill pipe should be between 1^+···+!^ and! ^+...+! ^Between, when LrP

+L, when the processing device determines that the drill pipe being operated is the drill pipe described in Section IX.

The manner in which the drill pipe operated by the drill pipe of the exemplary processing apparatus of the present invention is the i-th section is described above. Among them, the first method of directly judging according to the contraction length of the main hoisting wire rope is relatively simple, but since the power head 12 can also move up and down, there is an error, and the accuracy is low, but only the contraction length of the main hoisting wire rope needs to be measured. a physical quantity; the second method takes into account the position of the power head 12, but at least the height of the power head 12 from the ground and the end of the drill pipe need to be measured The depth of the end, the measurement method is more complicated, but the accuracy is improved.

Typically, the depth sensor is typically mounted on a main hoisting shaft that is typically mounted on the mast of the rig. However, the present invention does not limit the mounting positions of the depth sensor and the distance sensor described above, and any suitable mounting position can be applied to the present invention.

According to a preferred embodiment of the drill pipe monitoring controller, the actual elongation of the i-th drill pipe is

1 E-(

According to the above description of the calculation method of the extension length E of the end of the drill pipe, the calculation of the value of E avoids the error introduced by the position of the power head 12 and reflects the actual length of the actual drill pipe, and subtracts from the value. The total length of the fully extended drill pipe beyond the i-th drill pipe is the actual elongation of the i-th drill pipe. Of course, the actual elongation of the i-th drill pipe can also be obtained by other methods, such as direct measurement.

Additionally, preferably, the display device comprises one or more of a display, an audible alarm, and an optical alarm.

In order to enable the operator to know the monitoring result of the monitoring system of the present invention, the display device of the present invention can use the display to display the result of the locking point monitoring in detail, or use a simple buzzer or the like, such as an audible alarm or indicator light. An alarm or the like simply indicates that the operated drill pipe is currently at the lock point. The alarm device can be specifically selected according to the needs of the actual application.

According to a preferred embodiment of the drill pipe monitoring controller, the input device is further for receiving a signal indicating whether the drill rod has a rod.

The present invention also provides a machine lock drill, wherein the drill has the above-described monitoring system of the present invention. Through the above-mentioned monitoring system of the present invention, the drilling machine can monitor the locking point where the drill pipe is currently operated in real time, so that more serious faults such as damage to the drill pipe can be found and avoided in time. The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited to the specific details of the above embodiments, and various simple modifications of the technical solutions of the present invention may be made within the scope of the technical idea of the present invention. These simple variations are within the scope of the invention.

It should be further noted that the specific technical features described in the above specific embodiments may be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present invention has various possibilities. The combination method will not be described separately.

In addition, any combination of various embodiments of the invention may be made, as long as it does not deviate from the idea of the invention, and should also be regarded as the disclosure of the invention.

Claims

Rights request

A drill pipe monitoring method for a machine-locking drill, the drill comprises a multi-section drill pipe, and the drill pipe is respectively from the outside to the inside, and each of the drill pipes has M locking points. With the first section of the drill pipe as the reference rod, the maximum elongation of the i-th drill pipe is! ^, where ί=2,3 ··,Ν, the distance of the j-th locking point from the top end of the drill pipe is where j=l, ,M, which is characterized by determining that the measured drill pipe is operated In the i-th section, and receiving the measured actual elongation of the i-th drill pipe is 1, according to 1 _F - , the i-th drill pipe is moved to the j-th locking point.

2. The monitoring method according to claim 1, wherein the determining the measured operated drill pipe is the i-th section is specifically: the drilling machine further comprises a main winch (14) wire rope, receiving the detected Current shrinkage length (S) of the main winch (14), if

Where =0, it is determined that the drill pipe being operated is the i-th drill pipe.

3. The monitoring method according to claim 1, wherein the determining the measured operated drill pipe is the ith section: the drilling machine further comprises a power head (12), and receiving the detected drill pipe end The depth D of the underground, the height H of the power head (12) from the ground, the length T of the first section of the drill pipe, the extension length of the end of the drill pipe is E=D+HT, if L ₁₊ ~ +L _ll <E<L ₁ +-+L ₁ , then determine that the drill pipe being operated is the i-th drill pipe.

The monitoring method according to claim 3, wherein the actual elongation of the i-th drill pipe is l^E Lf+ ^

The monitoring method according to claim 1, wherein the monitoring method further comprises monitoring whether the drill rod has a rod, and outputting the value of the j while the rod is generated.

6. A drill pipe monitoring controller for a machine lock rig, the rig comprising a multi-section drill pipe, The drill pipe is from the outside to the inside, respectively, from the first section to the Nth section. Each section of the drill pipe has M locking points, and the first section of the drill pipe is used as the reference rod. The maximum elongation of the i-th drill pipe is! ^, where ί=2,3 ··,Ν, the distance of the jth locking point from the top end of the drill pipe is where j=l, ,M, the controller includes input devices and processing devices connected in sequence And an output device, characterized by:

The processing device is configured to determine, according to the received position signal of the drill pipe, that the operated drill pipe is the i-th segment, and determine the maximum elongation of the i-th drill pipe by the operated drill pipe for the i-th segment, The actual elongation of the i-th drill pipe 1, = - determine the value of j, and transfer the value of j to the output device;

The output device is operative to output a signal of the value of j.

7. The drill pipe monitoring controller according to claim 6, wherein the drilling machine comprises a wire rope of a main hoisting (14), and the input device receives a contraction length of the wire rope of the main hoisting (14) Signal of S, the processing device determines when

Where =0, the drill pipe is operated as the i-th drill pipe.

8. The drill pipe monitoring controller according to claim 6, wherein the drilling machine further comprises a power head (12), the input device receiving a signal of a depth D in the ground at which the end of the drill pipe is located, the power The signal of the height H of the head (12) from the ground, the signal of the length T of the first section of the drill pipe, the processing device calculates the extension length of the end of the drill rod as E=D+HT, and judges when L ₁₊ ~ +L _ll <E<L ₁ +-+L _{1 The} drill pipe is operated as the i-th drill pipe.

9. The drill pipe monitoring controller according to claim 8, wherein the actual elongation of the i-th drill pipe is

10. The drill pipe monitoring controller of claim 6, wherein the input device is further configured to receive a signal indicating whether the drill rod has a rod.

11. A drill pipe monitoring system for a machine-locked drilling machine, the drilling machine comprising a plurality of section drill pipes, wherein the drill pipe is from the outside to the inside, respectively, from the first section to the Nth section, each of the drill rods has M locking points, Taking the drill pipe of the first section as the reference rod, the maximum elongation of the i-th drill pipe is where ί=2,3 ··, Ν, where =0, the j-th locking point is from the top of the drill pipe The distance is j=l, ,M, wherein the monitoring system includes a detecting device, a controller for outputting a signal indicating a locked locking point, and a display device for displaying according to the controller output signal, The controller is a drill pipe monitoring controller according to the above claims 6-10.

12. A machine lock drill, characterized in that the drill has the drill pipe monitoring system of claim 11.